Harness mechanism for looms



Nov. 21, 1923 1,475,546

P. G. GIELEN HARNESS MECHANISM FOR LOO MS Fi y 16. 1921 a Shets-Sheet 1 EEEEEEEEEEEE ohnonbo 0 0000000000000 A TTORNE Y WITNESS INVENTOR WM Nov. 27 1923 P. ca. GIELEN HARNESS MECHANISM FOR LOOMS Filed May 1 1921 3 Sheets-Sheet 2 ATTORNEI" Nov. 27,1923 1,475,546

- P. G. GIELEN PiARNESS MECHANISM FOR LOOMS Filed may 16. 1921 3 Sheets -Sheet 5 T8 WITNESS Fatented Nov. 27, 1923.

PETER G. GIELEN, OF PATER-SON, NEW JERSEY.

HARNESS MECHANISM FOR LOOMS.

Apnlication filed. May 16, 1921. Serial No. 469,921.

To all whom it may concern.

Be it known that I, PETER G. GIELEN, a

citizen of the Republic of France, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Harness Mechanisms for Looms, of which the following a specification.

My invention relates to shedding mechanism for looms, and particularly for looms of the class of'that disclosed by my Letters Patent No. 1,362,287, wherein the weaving is done in an upright plane and so the shedding is performed in a more or less horizontal plane. My object is to simplify the construction and increase the efficiency of shedding means for looms of the particular kind mentioned, render the mechanism as compact and space-saving as possible, and

' arrange and construct the parts thereof so as to require the least amount of attention for repairs and replacement of parts and so that when such" replacements are necessary,

i W as in the case of the breaking of a hook, they may be effected with facility and the minimum loss of time.

In the drawings,

Figure 1 is a front elevation of the improved harness mechanism; i t

Figure 2 is a left or outer side elevation thereof, partly broken away;

Figure 3 is a rear elevation;

Figure 4 is a horizontal section taken just above the main supporting plate;

Figure 5 is a side elevation of the lower portions of the hook-actuating levers or knives and the cams for controlling their movements; and

Figures 6' and 7 are rear elevations of said lever portions and the cams, showing them in two different positions.

Let a inthe drawings represent a tappet shaft corresponding to the shaft 18 in my aforesaid patent. b is an upright which is to be bolted to the frame of the loom shown s in said patent back of the shaft a, forming therewith a part of the main supporting structure.

a is a casting in the form of a plate-like piece having a rearwardly extending flange (Z at its lower edge formed with longitudinal slots d out of alinement with. each other. The thus flangedplateis securedto the up- I right I) by brackets 6 provided on the'upright, the plate projecting laterally therefromandconsequently from the loom., To

the back of the plate are secured two vertical strips or elongated blocks f and g, the former being arranged at or near the inner edge of the plate and the other more or less near 1ts outer edge; the thickness of the stripor block 7' from the plate rearwar'dly is greater than that of the strip or block g. These two pieces are provided from top to bottom with slots f g which extend horizontally from the rear face of the plate rearwardly but so as to afford stops f" g at their rearward or outwardward ends, the depth of the slots f being of course somewhat greater than that of the slots 9. r

The thus comb-like or slotted strips or blocks 7 9, whose slots are alined with each ture substantially the same as in my said patent, being normally drawn toward the front of the loom by springs in and being adapted to be moved against the tension of the springs by cords Z extending around the sheaves and attached to the actuators h.

A bracket m projects outwardly from the upright Z; in a plane somewhat back of and parallel with the plane of the plate 0, being bolted to the upright. Pivoted to and suspended from this bracket are two levers a a which at their lowerend carry rolls 0 bearing against the left hand faces of cams 7) 7) fixed on the shaft a, these cams are reverse counterparts of each other in that the left-hand or acting face o'f'the cam 32' has two diametrically opposite falls or depres-, sions whereas the corresponding faceof the cam 79 has diametrically oppositely rises, the depressions of cam p" registering with the rises of cam 72. The springs 70, acting through the harness shafts, the cords Z, and

the actuators h, onehook of'each of which 7 (compare Fig. l) the harnesses will be leveled lnvertlcal alinement; when they are in the position shown in Fig. 7 some of the actuators will have been drawn to the right a pattern chain t,'the drum being adapted to be rotated from any rotating part of the loom through a wheel a on the shaft. The pattern chain actuates levers w pivoted in the grid above and resting on the chain, whose pegs t elevate them as they pass. Arranged in the slots of the grid on a horizontal shaft .90 are the bell-crank levers y whose horizontal arms have set screws 2 resting on the levers w. The free ends of the upstanding arms of the levers y are bent rearward, being arranged at graduated elevations, and when these levers are actuated by the pattern chain they press rearwardly other levers 2 ful'crumed on a vertical shaft 8 secured in bosses 4 projecting forwardly from plate 0. The plate has attached to the front face thereof a strip or elongated vertical block 5 provided with a vertical series of holes in which are arranged push-pins 6 whose head 6 are notched to receive and thus support the free ends of the levers 2; this block is opposite the block 9 and its holes are opposite the slots in said block and so when any lever g is actuated the movement is transmitted through the corresponding push-pin to the relatively forward or longer leg of the corresponding actuator h. The elasticity of the actuators normally maintains the legs of each in about the position shown by full lines in Fig. 4%: that is, the hook on the rear leg of each actuator is always in the same plane as the knife or lever n", but the hook on the other leg normally tends to stand forward of the plane 'of movement of the other knife or lever 01.

The operation will be readily understood by those skilled in the art. When the shaft a is in rotation the levers a a are moved alternately toward and from each other twice for every revolution (that is, once for each pick) of the loom; the drawings show thelevers in Figs. 1, 3, 4: and 6 in the positions where they are closest together, the

shed being closed. If none of the actuators were therefore call'ed from the pattern chain (which is timed to occur when the shed is closed), on the ensuing movement of the levers apart all the actuators, being then engaged only with the lever 91", would travel to the right therewith, allowing the harness shafts to move forward under the pull of the-springs is. But to form the shed some of the actuators: ar e called from the navaaae tween the harness shafts and fell of the pattern chain, that is, through the parts w, y, 2 and 6, the forward legs of the called actuators being pressed or sprung back so that their hooks come into the plane of movement of the lever a, wherefore the actuators so called will be moved 'to the left as the remaining actuators are allowed to move to the right, so that some of the shafts recede asthe others go forward. Bodily movement of each actuator backward when called, i. e., without the forward leg springing backward relatively to the rearward leg, is prevented by the latter leg hearing at this time against the stop corresponding thereto.

When the levers a a are closest to-- gether they are substantially parallel but when they are moved apart each is inclined (Fig. 3, dotted lines), in consequence of which in the latter positions. ofthe levers the harness shaftsfrom top to bottom will be spaced regularly increasing distances, thus to bring the portions oflthe'warps becloth in two distinct converging" planes. The degree of convergence may be varied by shifting the bracket m vertically in. a slot m provided. therefor in the upright b and shifting the bearings of the rollers 0. vertically in slots 0 provided therefor in the lever 'n/ n". V

The improved mechanism is efficient, compact and durable. If an' actuator breaks or becomes distorted it can be readily removed for repairs or replacement by a new one by springing its legs together and withdrawing it from the slotsof the blocks 7 g.

I do not wish to be limited to the specific arrangement and construction of the several parts except as provided in the appended claims:

I claim:

1. In combination, with a plate-like support, a set of back-anctforth movable actuators each arranged close to and movable parallel with one broad face thereof said support having means to guide the actuators, means to move the actuators back and forth including a knife movable back and forth substantially parallel with said face, said actuators having portions. thereof movable into and out of the path of movement of the knife, and means, arranged on the support opposite and: close to its other broad face and having parts thereof penetrating said support, for selectively controlling the movements of said actuators into and out of the path of movement of the knife. 7

2. In combination, back-and-forth longi= tudinally movable bifurcated elastic harness actuators,'the' several actuators being; ar ranged with the legs of each in a plane parallel withthat off the legs of. any other, actuator, a plate-like support: having means on one broad face thereof to confine each actuator to substantially its said plane and means to resist movement of one of its legs transversely relatively to the other while permitting the other leg to be sprung transversely thereof, means to move the actuators longitudinally back and forth including a knife movable back and forth substantially parallel with said face of the support, said other leg of each actuator having a lateral projection movable in the transverse movement of said leg into and out of the path of the knife, and means, arranged on the other broad face of said support and having parts thereof penetrating the same, for selectively controlling the transverse movements of said other legs of the actuators.

' 3. In combination, back-and-forth longitudinally movable bifurcated elastic harness actuators, a plate-like support having an elongated member across one broad face thereof formed With transverse slots substantially perpendicular to said face and e each affording an outward stop, said actuators being guided in said slots and held thereby in parallel planes and adapted to bear with one leg of each against the corresponding sto when the other leg is pressed away from t e support, means to move the actuators longitudinally back and forth including a knife movable back and forth substantially parallel with said face of the support, said other leg of each actuator having a lateral projection normally arranged in the path of the knife, and means on said support for selectively moving said other legs of the actuators away from said suport. P In testimony whereof I afiix no signature.

- PETER G. IELEN. 

